S3·E10 Episode 10

Molly is delighted to hear of Archie and Lexie's engagement but Hector declares the marriage doomed. Archie severs all ties with his father saying the marriage will go ahead with or without his approval. Molly's brother Jo arrives unexpectedly from Africa. Meanwhile Hector is horrified to find his trout are being decimated by a killer pike and he decides to take matters into his own hands, planning to get rid of the brute with plastic explosives. The inevitable happens and Hector manages to kill himself off in the most unusual circumstances.